Question about Sensolar Sun protection

I just checked, my bottle has a Reef Friendly label on the back of the bottle.

Thank you very much for the answer. Then nothing stands in the way of the purchase.

Probably not. The trick of Sensolar is that it is a chemical sunblock, not a physical one. The advantage of Sensolar is that it doesn't need any chemicals to add the water-soluble and fat-soluble substances that are present in every chemical sunscreen (hence the two phases that you have to shake together just before application). These missing components make the cream kinder to your skin and the environment. But it's still a chemical sunblock. In contrast, physical sunblocks are less chemically reactive, so are primarily made of inert materials. However, these also end up in the environment.
Sunscreens are always a compromise between protecting your skin and the environment.